# ISO/R 191:1971 — Withdrawn and superseded ISO standards

For ISO/R 191:1971, item title is Brinell hardness test for light metals and their alloys; status code is 9599; successor is ISO 6506:1981; withdrawn / published date is 1971-10-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO/R 191:1971 _(verified: appears in the quote below)_
- **Item title:** Brinell hardness test for light metals and their alloys _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6506:1981
- **Withdrawn / published date:** 1971-10-01 _(verified: appears in the quote below)_

## What the source says

> 4041,R,,ISO/R 191:1971,Brinell hardness test for light metals and their alloys,Essai de dureté Brinell pour les métaux légers et leurs alliages,1971-10-01,1,['77.040.10'],ISO/TC 164/SC 3,9599,,[12885],"['en','fr']",3,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).